MC34844AEP Freescale Semiconductor, MC34844AEP Datasheet - Page 26

• Manufacturer Part Number: MC34844AEP
• Description: IC LED DVR BACKLIGHT 10CH 32QFN
• Manufacturer: Freescale Semiconductor

Specifications of MC34844AEP

• Constant Current: Yes
• Internal Driver: Yes
• Type - Primary: Backlight
• Mounting Type: Surface Mount
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 10
• Frequency: Adjustable/Selectable
• Voltage - Supply: 7 V ~ 28 V
• Voltage - Output: 60V
• Package / Case: 32-VFQFN Exposed Pad
• Operating Temperature: -40°C ~ 105°C
• Operating Supply Voltage: 7 V to 28 V
• Maximum Supply Current: 10 mA
• Maximum Power Dissipation: 3.9 W
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Analog Integrated Circuit Device Data
Freescale Semiconductor
10.10
10.08
10.06
10.04
10.02
10.00
9.98
9.96
9.94
9.92
9.90
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
0.4%
Figure 12. Bias Current vs Input Voltage (Operational Mode)
15 16
0.14 mA
17 18
Figure 11. PWM Dimming Linearity
25.0%
19 20 21
12.46 mA
PWM Duty Cycle (%)
Vin, volts
22 23
50.0%
25.03 mA
24 25 26
75.0%
TYPICAL PERFORMANCE CURVES (TA=25°C)
I2C Mode
SM_Bus Mode
Manual Mode
37.59 mA
FPWM=25KHz
27 28
FUNCTIONAL DEVICE OPERATION
50.01 mA
29 30
99.6%
34844
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